Level



k'libaicented @et 3,' 1922:'

nutren stares ,I y maar rentrant rica.

anonce n. cocavnn, or srocfx crrv, iowa.

LEVEL.

To all wwm it may concern:

Be it known that l, GEORGE B. Cooarnn,

l a citizen of the United States, residing at Sioux City, in the countyof Woodbury and invention consists in the improvement as hereinafterdescribed and deiinitely claimed. ln the accompanying drawings, formingpart of this specicatioru- Y Figure 1 is a side elevation otmy novel ylevel, with the body of the level broken.

Figure 2 is a transverse section taken in the plane indicated by theline 2 2 of Figure 1. v

Figure 3 is a' detail broken view illustrative oit the relativearrangement of the casing body, the spider, and the shaft one endportion of which is journaled in the spider.

Similar numerals of reference designate corresponding parts in all ofthe views of the drawings.

The body 1 of my novel level may be and preferably is of wood, and inone of its sides and at an intermediate point in its' length it ischambered as indicated by2 in Figure 2. ln the said chamber 2 isarranged a casing body 3 which is preferably of metal and has its edgearranged approxi-- mately flush with. the chambered side ot the body 1.At the center of its inner wall the casing body 3 is provided with abearing l to receive one end of a shaft 5 on which is a plumb bob 6.'lhe outer portion of the said shaft 5 is journaled in the center 7 of aspider 8 the arms of which are iixed at 9 with respect to the circularwall of the casing body 3.

Arranged in the casing body 3 and snug against the spider 8 so as to be'supported by the spider 8 is a dial 9 on the .face of which arepreferably, though not necesnppiianon mec July 2a,

taai. serial no. maeva sarily, employed graduations 10, arranged' in acircular series or in arcuate sets as desired. l also prefer to providethe dial on its face with marks 11, Figure 1, arranged equi-distantly asillustrated. Fixed on the shaft 5 in iront of the dial 9 arey ointers,

.12, 13 and 14:, the pointer l2 being esigned to indicate the variationsfrom the vertical or perpendicular, and the pointers 13 and 14 toindicate the variations from. the

horizontal.

Arranged in front of the pointers is a transparent disk 15 referably .ofglass which is retained within .the flange 16 of an' annulus 17,appropriately secured on the circular wall of the casing body 3. lt

will be apparent from the foregoing that myl novel level is calculatedto accurately indicate variations from the vertical and from thehorizontal of any piece of structure on which the body 1 is arrangededgewise; and it will also be apparent that the level as a whole issimple and inexpensive 'in construction and is not liable to get out oforder even when roughly or carelessly handled. n

l have entered into a detailed description of the construction andrelative arrangement ol parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear and exactunderstanding of the said embodiment. l do not desire, however, to beunderstood as confining myself to .theI said specific con struction andrelative arrangement of parts inasmuch as inthe future practice of theinvention various changes and modifications may be made such as fallwithin the scope of my invention as defined in my appended claim. v

Having described my invention, what ll claim and desire to secure byLetters Fatdthecasing body about the'shat-andimmediately against theouter side of lthe spider whereby the vdial is braced by the spider,

pointing means xed to elle shefo and m'- and Sum'oundimg ehe lamerWhefeby the ranged in from of fhe died, e -zronspdent malus is Securednposiziomemda plumb bob disk opposed to the edge of fake easing bodyErzied'o the Sheff; arranged Toeween be EL@ am annulus having e Hngespaced from inner wad of the casing body amd be spider. said edgel andopposed fao the ow'er side of In tesimomy whereof, ex my signo the saiddisk and also having a Hange n'terposed beween she body and ehe easingbody E @@CYN

